export const getStatusBarHeight = ()=>{
	return uni.getSystemInfoSync().statusBarHeight || 15;
}

export const getTitleBarHeight = ()=> {
	if (uni.getMenuButtonBoundingClientRect){
		let { top,height } = uni.getMenuButtonBoundingClientRect();
		return height + (top - getStatusBarHeight()) * 2
	} else {
		return 40;
	} 
}

export const getNavBarHeight = ()=> getStatusBarHeight() + getTitleBarHeight() 
